Comet Holmes, complimentary to Jiahao's pictures

[Meng Lee]

Hi all,

I know its outdated, but I am only free until now. So 4 Dec Comet Holmes with Canon 350D and Megrez 80 FD. ISO 800, 45 secs exposure.



Thanks for looking.

[kingkong]

beautiful!!

i want to take one too... hope the sky tonight will be clear here...

[jiahao1986]

Wow! It's hard to imagine this image is captured in Singapore. Is this a single frame? If so, Canon's noise control is indeed better than Nikon.

[Meng Lee]

Hi thanks for all the replies, before more questions pop up, I better admit to several mistakes I made in the picture:

1) Its an average of 53 frames of 45 secs each
2) Shot from NUS rooftop, so there is severe light pollution, I used Orion LPR filter. Looks like IDAS LPS is the next item to order. Hehe
3) In a desperate attempt to save the colour distortion due to LPR filter used and its a modfied camera, I roughly white balance it using a Macbeth card shot under flourescent light with the filter on.
4) In the end, I decided to colour balance with a bit of green tone in the picture.
5) To make the focal ratio small, I used a SCT reducer on the Megrez 80, so you can see severe distortions of stars 50% out the field, I cropped and downsampled to make it less visible.

hope all of you learn from the errors I made. Nevertheless enjoy the beauty of the comet.

[mrngbss]

Very good!! I learnt something from this. Thanks for the specs (even though I know very little about Deep sky processing)!

[Tachyon]

Wow! Best picture of the comet I've seen so far!

[acc]

Wow!!

[jermng]

Wow!
What mount did u use?

[Meng Lee]

Hi, I used my trusty EQ-6 Pro mount. Equivalently Orion Atlas EQ-G mount. Very trusty despite strong winds yesterday.

[vil]

gosh i hope someone can teach me take this kind of photos

but it sounds like an expensive hobby to pick up!!